gollings



(No Model.) 3 Sheets-Sheet 1..

E. H. GOLLINGS. ROTARY PUMP.

No. 448,608. Patented Mar. 17, 1891.

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ROTARY PUMP. No. 448,608. Patented Mar. 17, 1891.

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(No Model.)

E. H. GOLLINGS.

ROTARY PUMP. No. 448,608.

Patented Mar. 17, 1891 1.

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ELLIOK ll. GOLLINGS, (SF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOLLINGS BI-CENTRIO PUMP COMPANY, OF SAME PLACE.

ROTARY PUIVI P.

SPECIFICATION forming part of Letters Patent No. 48,608, dated March 17', 1891. Application filed December 14, 1889. Renewed January 8, 1891. Serial No. 377,172 (No model.)

To all whom it may concern;

Be it known that I, ELLICK H. GOLLINGS, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bicentric Rotary Pumps; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to that class of ro tary pumps (illustrated in prior applications for Letters Patent, Serial Nos. 301,67 5 and 315,250, filed by me, respectively, March 1, 1889, and June 22, 1889) in which a concentric rotating shell contains and rotates a chambered eccentrically-mounted wheel, and in which passages in a non -rotatin g axial support respectively afford supplyand discharge to and from the interiorof the shell as it and the eccentric wheel are simultaneously rotated.

The object of the present invention is to provide an improved construction of the mutually-engaging projections on the interior of the shell and upon the periphery of the cocentric wheel, by which the general space be tween the wheel and the shell is divided in the plane of greatest eccentricity into two non-communicating compartments, and by which the eccentric wheel is driven from the shell which surrounds it.

Another object of the invention is to provide a construction (applicable not only to the particular form of shell and wheel herein shown, but also to other forms of these parts, including those shown in my before-mentioned applications for patent) by which the fluid to be pumped is admitted and discharged at one and the same side or end of the machine.

In the accompanying drawings, which illustrate my improvements, Figure 1 is a longitudinal vertical section of a machine arranged with its plane of greatest eccentricity horizontal, said section being in the axis of the shell as to the anti-friction rollers and shaft, which are shown in side elevation, the section-line being diverted in the space occupied by the rollers within the eccentric wheel, as indicated by the line 1 l of Fig. 3. Fig. 2 is a section in the line 2 2 of Fig. 3, or in the plane of greatest eccentricity, the shaft and the anti-friction rollers being shown in full view instead of in section. Fig. 3 is a vertical transverse section through the rotating shell and its contained eccentric wheel in the line 3 3 of Fig. 1, and Fig. 4 is a vertical transverse section in the line 4; 4E of Fig. 1.

The arrows applied to the several sectionlines indicate the directions of views;

A A is the main side portion of a frame, having cross-pieces A at its ends, said frame at one end supporting an annular part A while at the other end it supports an arch A provided with a central socket piece or bearin g A for the non-rotating main shaft.

B B is the non-rotating shaft, having concentric portions B B and a central eccentric 7o portion B. One of the concentric portions B is supported and clamped at its outer extremity in the bearing A and the outer end of the other concentric portion B is supported in a socket 0, formed in the projecting end 0 of a diaphragm C in a non-rotating hollow part O, which is itself sustained and held from rotation by a flange c thereon bolted to the annular frame-support A The shaft B B is held from rotation in the socket c by means of a pin I) inserted through the 'opposite walls of said socket and passing through a hole or notch 1), formed in the end of said shaft.

The support 0 is a tube having acylindric portion 0 at its inner end for the purpose of forming a bearing for one end of the rotatin g shell. It also has the diaphragm G",which is prolonged beyond the inner end of the tube, and is tapered toward its inner extremity, as 0 seen in Figs. 2 and l. The object of the dial phragrn C is to afford both an inletand an outlet at one and the same end of the pump. The diaphragm C is arched to make the inlet 0" larger than the outlet 0 but the extremity 5 of the prolongation c of said diaphragm is in the horizontal diameter of the tube (1, as shown in Fig. 4, to coincide with the horizontal line of division of the interior of the pump as adopted in the drawings.

l) is a rotating shell of the machine, composed of the three parts, to wit: the end plate (I, having a roller-bearing, and also externally to the latter, at (Z', a packed bearing upon the adjacent concentric portion B of the main shaft, the opposite and chambered end portion D, having a roller-bearing on the other concentric portion 13 of the shaft, and also a packed bearing at (Z upon the concentric portion 0 of the tube C, and the peripheral ring D which is bolted between the end plates (Z and I). The end plate I) is pro vided with a number of passages p, separated by radial webs (i arranged, as here shown, in the direction of the axis of the shell. The chambered end plate I) is also extended inwardly, as shown at d", Fig. 1, beyond the adjacent ends of the webs (1, so as to bear laterally against the end of the prolongation c of the diaphragm C. The ends of the webs (Z adjacent to the tube 0 run in contact with the tapered sides of the prolongation c of the tube-diaphragm C, as indicated in Fig. 2, and these tapered sides are wide enough to continue in contact with the end of one of the webs d until an other has reach ed it, as shown in Fig. 4.

The peripheral ring D of the shell I) is provided with a number of transverse slots (7, having eyliudric enlargements at their hottoms, as shown in Fig. 2 F l are wings hinged in these slots, and to that end having corresponding enlargements f at their outer edges. One wall of each of said slots (Z is parallel to a radius of the shell, and the opposite wall is inclined so that the wings F, provided with the cylindrically-enlarged partsf, when occupying the slots, may have a limited range of vibration or swing therein. These hinged wings F are provided at their inner edges with flanges F on that side of said wings toward the straight side of the slots (Z G is a wheel mounted on the eccentric portion 13 of the shaft l3 l3, and provided in its periphery with a series of recesses g, opening outwardly and separated by rigid wings g, corresponding in number with the number of hinged wings F. These rigid wings are generally radial in their direction, but have at their outer extremities flanges which project in the same direction asthe flanges F on the hinged wings F. The rigid wings g of the eccentric wheel are of such length as to reach into contact with the inner periphery of the shell on that side of the eccentric wheel nearest the shell, and the hinged wings F are of suflicient length and arranged in position to bear at the edges of their flanges Fnpon the straight sides of the rigid wings g at that side of the eccentric wheel which is most remote from the shell. This contact of a rigid wing of the eccentric wheel with the shell at one side and contact of the opposite rigid wing with a hinged wing F at the opposite side of the wheel gives a division of the general space between the shell and the eccentric wheel into two parts, said division-line being in the plane of greatest eccentricity. The webs (Z in the head or end plate D of the shell correspond in number with the number of wings in the shell or on the eccentric wheel, and are so arranged that two opposite ones will be in a horizontal plane when two opposite wings of the eccentric wheel are in that plane. The division of the pump proper, therefore, extends to the chambered head D and the common inlet and outlet tube (J.

Vith the wings of the shell and eccentric wheel having their flanges in the direction shown, the shell will be rotated in the direction indicated by the arrow applied to Fig. 3, and a wing F belonging to the shell at the lowerpart of the machine (as here arranged) will be the medium of transmitting motion from said shell to the eccentric. This it does by coming into contact with the straightside of the slot (1", in which it is hinged, which slot thus supports the wing from tipping farther in that direction and by bearing near its inner edge against the end of the flange g on an adjacent rigid wing g. The contact of these wings is only brief and limited to the distance between one wing and the next in the are of such contact. As explained in my first above-mentioned application, this short are of driving contact between the wings of the shell and eccentric wheel is nearly a plane and considered as such is practically parallel with the plane of greatest eccentricity, or, in other words, of the plane which passes through both the axis of the shell and that of the eccentric wheel. The eccentric wheel is therefore rotated at a practically uniform speed, and is given the same number of revolutions in a given time as the shell.

The end plates (Z and D of the shell are parallel inwardly from the periphery of the shell as far as the wings F extend, as shown in Fig. 1, and said end plates therefore prevent passage of the fluid being pumped around or past the ends of the said wings. It is radially within the circle of the inner ends of the hinged wings F that the passages p of the head I) connect with the interior of the shell.

By reason of the division of the general space between the shell and the eccentric wheel and of the gradual enlargement of the several compartments 011 one side of the divisional plane and their corresponding contraction on the other side of said plane in the direction of rotation the fluid to be pumped is sucked into the first compartment and expelled from the second. The suction takes place in the arrangement here shown below the diaphragm C of the casting C or through the inlet-passage a", and the fluid is expelled through the passage 0 of said casting.

E is a casting provided with a flange 6, which is bolted with the flange c to the annular support A of the frame. Said casting is provided with a passage 6, which forms a continuation of the passage 0 and also with a passage 0 in continuation of the passage To this casting E may be connected pipes forming prolongations of said passages e and 6 one of them to connect with the source of liquid to be pumped and the other with any suitable pipe for its discharge and delivery.

The casting E is shown as being provided with an independent support a which in the case of a machine of considerable size will be desirable, owing to the weight of said casting E.

By making the side faces of the prolongation 0 of the diaphragm O inclined or tapering, as shown in Figs. 2 and 4, and making the webs (Z correspondingly inclined at their ends, it is manifestly practicable to always maintain a substantially tight joint between these stationary and revolving parts by movement of the revolving parts toward the casting 0. This may be done by means of any suitable adjusting device, one simple form of such a device being shown in Fig. 1, consisting of a rim l-I, interposed between the end of the rotating head (Z of the shell and the support A of the shaft, backed by adj ustingscrews 7t 7t, threaded through lugs a a on said support. The set-screw I, threaded through the closed end of the support A and pressing against the end of the shaft, will serve for the adjustmentof the shaft in harmony with any adjustment of the rotating parts.

The roller-bearings interposed between the several rotating parts and the corresponding parts of the shaft B 3 are no part of the present. invention.

I claim as my invention- 1. In a rotary pump of the general character described, the combination, with a rotating shell and a therein-contained eccentric wheel, of a non'rotatin g pipe passing through one of the rotating heads of the shell and containing both a supply-passage and a discharge-passage, whereby the supply and discharge take place atthe same end of the pump.

2. In a rotary pump of the general characacter described, the combination, with the rotating shell and the thereimcontained rotating eccentric wheel, of anon-rotating tubular part 0, having a diaphragm or partition dividing it into two pipes or passages communicating severally with the several compartments of the pump.

3. In combination with the non-rotating shaft having an eccentric portion and the rotating shell and wheel mounted thereon, said shell having a head provided with passages 19, a non-rotating tube provided with a diaphragm or partition, and a socket-piece supporting the adjacent part of the shaft and forming an extension of the diaphragm.

4-. In combination with a non-rotating shaft having concentric and eccentric portions, substantially as described, a rotating shell provided at its inner periphery with hinged wings F, having flanges F near their inner extremities and directed rearwardly with respect to thedirection of rotative motion of said shell, supportingsurfaces on the shell limiting the swinging movement of said wings, a wheel rotating on the eccentric portion of the shaft, rigid wings g on the periphery of the wheel, and rearwardly-directed flanges 9 near the outer ends of said rigid wings, said rigid wings being adapted for contact with the rim of the shell and with the hinged wings for the division of the space between the shell and the wheel into two compartments, and also adapted for contact with the hinged wings for the propulsion of the eccentric wheel through such contact, substantially as described.

5. In a rotary pump, the combination, with a non-rotating axial tube provided with a pro jecting part having tapered sides, of the rotating shell having a chambered head provided with wings, the ends of which are divergent to fit the tapered sides of the stationary tapered part, and means for adjusting the shell in the direction of its axis.

In testimony that I claim the foregoing as my invention I affix my signature in presence of two witnesses.

ELLICK ll. GOLLINGS.

Witnesses:

M. E. DAYTON, TAYLOR E. BROWN. 

